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The blockage or closing of a blood vessel or hollow organ.
obstruction, stoppage, block, clotView synonyms
- ‘Cardiac catheterization can confirm vascular occlusion and angioplasty is frequently used to treat a localized problem.’
- ‘The occlusion rates are close to 100%, higher than published results for surgical ligation.’
- ‘Localized observation of blood vessel stasis, occlusion or vessel dilation have all been observed with Photofrin treatment in vivo.’
- ‘Two of the 4 patients with cirrhosis had hepatic infusion chemotherapy and therapeutic occlusion of hepatic arteries.’
- ‘The blood vessel wall is usually involved early with resultant hemorrhage, thrombotic occlusion, and lung infarction.’
[count noun] A process by which the cold front of a rotating low-pressure system catches up the warm front, so that the warm air between them is forced upwards off the earth's surface between wedges of cold air.
- ‘In a cold occlusion, the reverse occurs and the occlusion resembles a cold front.’
- ‘The second type is a warm occlusion, which occurs when the air behind the front is warmer than the air ahead of the front.’
- 2.1 An occluded front.
- ‘The meteorological language, which Doogan edits slightly, destabilizes into a poetry of cyclones, occlusions and disturbances.’
- ‘In both types of occlusions, the occluded front has well defined vertical boundaries between the coldest air, the cool air, and the warm air.’
The position of the teeth when the jaws are closed.
- ‘The initial jaw position was obtained with the teeth in centric occlusion.’
- ‘Posterior teeth may need to be replaced to restore occlusion.’
- ‘The lowered position of these surfaces require downward flexion of the rostrum in order to maintain occlusion of upper and lower incisors.’
- ‘The multi-cusped cheek teeth, complex occlusion and extensive palinal power stroke were well suited for shredding fibrous plant material.’
Mid 17th century: from Latin occlus- shut up (from the verb occludere) + -ion.
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